Home / 85,781.36-128,549.45-48,263.06

Finding the Fourth Proportional to 85,781.36, 128,549.45 and 48,263.06

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Solution

The fourth proportional to 85,781.36, 128,549.45 and 48,263.06 is: 72,325.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,781.36 : 128,549.45 = 48,263.06 : x
  2. Step 2: Convert to fraction form
    85,781.36/128,549.45 = 48,263.06/x
  3. Step 3: Cross multiply
    85,781.36x = 128,549.45 × 48,263.06
  4. Step 4: Simplify right side
    85,781.36x = 6,204,190,260.35
  5. Step 5: Solve for x
    x = 6,204,190,260.35/85,781.36
  6. Step 6: Final answer
    x = 72,325.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.